Pump particularly adapted for use with wafer-biscuit machines.



No. 852,694. PATBNTED MAY 7, 1907.

G. S. BAKER.

IUMP, PARTICULARLY ADAPTED FOR USE WITH WAFER BISCUIT MAGHINES.

APPLICATION FILED JUNE 9. 1906.

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PATENTED MAY 7, 1907.

- G. S. BAKER. PUMP PARTICULARLY ADAPTED FOR USE WITH WAPER BISCUIT MACHINES.

APPLICATION FILED JUNE 8. 1906.

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No. 852.694. PATENT-ED MAY 7, 1907.

G.S.BAKER. PUMP PARTICULARLY AD'APTED FOR USE WITH WAFER BIscnIT MACHINES.

APPLICATION FILED JUNE 8. 1906.

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PATENTED MAY 7, .1907.

No. 852,694. v 'G. s. BAKER. PUMP PARTICULARLY ADAPTED FOR USE WITH WAFER BISGUIT MACHINES.

-' APPLICATION FILED JUNE 8, 1906.

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UNITED STATES PATENT @FFllQlE.

GEORGE SAiMUEL BAKER, OF HAMMERSMITH, LONDON, ENGLAND.

PUMP PARTICULARLY ADAPTED FOR USE WITH WAFER-BISCUIT MACHINES.

Specification of Letters Patent.

Patented May 7, 1907.

Application filed June 8,1906. Serial No. 320 792. v

To ttZZ whom, it may concern:

Be it known that I, GEORGE SAMUEL BA- KER, a subject of the King of England, residing at Hammersmith, London, England, have invented certain new and useful Improvements in Pumps Particularly Adapted for Use with Wafer-Biscuit Machines, of which the following is a specification.

This invention relates to pumps particu larly adapted for use with wafer biscuit machines of that class wherein the molds or tongs are connected together and provided with rollers or wheels traveling on an endless track below the filling pump or pumps, where they are either stopped or continuously travel forward and are opened for a time sufficient for filling and thereupon closed and passed through a baking chamber.

The object of the present invention is to provide improved means for operating the 111111) to fill the molds after it has been ldrought above same while they are opened and while said pump is being withdrawn during stoppage or continuous forwarding of the molds, and further to details of construction hereinafter described and claimed.

Reference is directed to the accompanying drawings in which Figure 1 is a side elevation showing part of such a machine with the pump and operating mechanism, Fig. 2 is a plan view of Fig. 1, certain parts being removed. Fig. 3 is a detail view of part of the pump operating mechanism. Fig. 4 is a section through the pump showing the means for supporting same, together with its valves and discharge pipes and Fig. 5 is a plan view of Fig. 4. Figs. 3 to 5 are on a larger scale than Figs. 1 and 2.

Similar reference numerals refer to similar parts throughout the several views.

Referring more particularly to Figs. 1 and 2, 1 indicates the frame of the machine, 2 the molds which in the present case are in the form of cups for forming wafer receptacles for ice creams. 3 the endless track and 4 the rollers in connection with the molds and running on said track. The pump 5 which may be single, duplex or multiple according to the number of molds to be filled is constructed in the known manner with two sockets or sleeves 6, 6, adapted to slide on guide rods 7, 7, mounted in brackets 8, 8, on the machine frame 1. The ump is fed forward, that is to say, toward t 1e left in Fig. 1, by any suitable known means which are not illustrated as they form no part of the present invention and may be of any suitable type.

The return movement of the pump may alsobe effected by known means for example by a connecting rod 9 operated by a lever 10 having a number of, for instance two, teeth 11 acted on by a rack or toothed portion 12 in connection with the traveling molds or tongs 2.

Aduplex pump is shown in the accompanying drawings and according to this invention the piston-rods 13 are connected to a crosshead or slide 14 sliding on one of the guides 7 and engaging a guide-way 15 in the pump casing. To said slide is connected a link 16 engaging at its other end the slotted arm 17 of a bell-crank-lever pivoted at 18 to the pump casing, the other arm 19 of said lever having an antifriction roller 20 adapted to engage a slide 21 secured by set-screw 22 in a bracket 23 secured to the side of the machine frame and the upper surface of which has a cam path or surface 24.

In the duplex pump shown in Figs. 4 and 5 the particular construction of which forms no part of the present invention 25 and 26 are the cylinders, 27 and 28 the suction valves, 29 and 30 the delivery valves, 31 the suction inlet in communication with a batter receptacle (not shown) and 32 and 33 the discharge pipes having branches 34 and 35 respectively (Fig. 2) provided with nozzles 36 positioned to come over the rows of cups 37 in the molds or tong plates 2.

The operation of the pump is as follows: The whole pump casing and pistons are first moved forward together in the known manner along the guide rods 7, until the roller 20 on arm 19 of the bell-crank-lever abuts against the slide 21, and the continued forward movement of the pump causes this roller to travel down the side of said slide and vertical end of bracket 23 to about the point 38 to produce a quick suction stroke of the pump by operating the pistons through arm 17, link 16 and slide 14. The forward movement of the whole pump then ceases and the operation of the pump takes place through the rod 9, lever 10 and co-acting teeth 11 and 12, which causes the roller 20 on arm 19 to travel along the cam path or surface 24 and produce a slow delivery stroke of the pump to fill the cups while the pump is traveling back over the mold or tong plate 2.

For varying the stroke of the pistons the arm 17 of the bell crank lever may be slotted at so that the link 16 may be adjusted therein.

The object of the slide 21 adapted to be adjusted in the end of the bracket 23 by means of the screw 22 is for stopping the action of the pump without affecting the remaining parts of the machine, for which purpose the screw 22 is loosened and the slide 21 dropped within the bracket end, so that the roller 20 on arm 19 having no surface to abut against there will be no suction or delivery strokes of the pistons the whole pump simply running idly on the guide rods 7.

What I claim as my invention and desire to secure by Letters Patent of the United States 1s:

1. In a pump of the character described the combination with a reciprocatable cylinder and piston therein, of a bell-crank-lever in connection with said piston, an abutment with which said lever coacts to produce the suction stroke on movement of said cylinder in one direction and a cam path on which said lever travels on reverse movement of said cylinder to produce the delivery stroke substantially asdescribed.

2. In apump of the character described the combination with a reciprocatable cylinder and piston therein, of a slidable cross head connected with said piston, a bell-crank-lever, means for adjustably connecting said cross-head and bell crank lever, an abutment with which said lever co-acts to produce the suction stroke on movement of said cylinder in one direction and a cam path on which said lever travels on reverse movement of said cylinder to produce the delivery stroke substantially as described.

3. In a pump of the character described the combination with a reciprocatable cylinder and piston therein, of a bell-crank-lever in operative connection with said piston, an adjustable slide with which said lever co-acts to produce a quick suction stroke on movement of said cylinder in one direction and a curved cam path on which said lever travels on reverse movement of the cylinder to pro duce a slow delivery stroke substantially as described.

4. In a pump of the character described \the combination with a reciprocatable cylinder and piston therein, of a bell-crank-lever in connection with said piston, an abutment with which said lever co-acts to produce the suction stroke on movement of said cylinder in one direction a cam path on which said lever travels on reverse movement of said cylinder to produce the delivery stroke and means for varying the stroke of the piston substantially as described.

5. In a pump of the character described the combination with a reciprocatable cylinder, and piston therein, of a guide-way on said cylinder, a slidable cross-head connected with said piston and engaging said guide-way, a bell-crank-lever, an'adjustable connection between said cross-head and one arm of the bell-crank-lever, an adjustable slide with which the other arm of said lever. co-acts to produce the suction stroke on movement of the cylinder in one direction, and a curved cam-path with which said last mentioned arm co-acts on reverse movement of the cylinder to produce the delivery stroke substantially as described.

In witness whereof I have signed this specification in the presence of two witnesses.

GEORGE SAlVIUEL BAKER.

Witnesses: I

WM. 0. BROWN, F. 0. SMITH. 

